Guns with the B in the serial # are guns that have a cosmetic blemish. It may be from a overpolished edge or a flaw in the anno. This was done due to the fact that DLX wanted to make sure they could be identified and if someone bought a B gun, did not try to get a gun replaced due to the Blemish. These guns were usually slightly discounted to make up for the flaw. There was a batch of the Eggplant body & parts that were scratched & dimpled on the return trip from the annodizer, so I think there are more of teh Eggplnt B guns than any other color. Most of them, you could not find unless you knew what the flaw was, But Darryl would not sell them as AAA finish guns, hense the "B".